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Proceedings Papers

Impact of the Wall-Parallel Length Scale of Roughness on the Development of Turbulent Boundary Layers in Turbines

Abigail M. Berhane, John P. Longley
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A009, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-122213
https://doi.org/10.1115/GT2024-122213
View Paper titled, Impact of the Wall-Parallel Length Scale of Roughness on the Development of Turbulent Boundary Layers in Turbines
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Topics: Boundary layer turbulence, Surface roughness, Turbines, Sands, Separation (Technology), Additive manufacturing, Compressors, Engines, Flat plates, Momentum
Proceedings Papers

Direct Numerical Simulation of an HPT Stage: Unsteady Boundary Layer Transition and the Resulting Flow Structures

Taiyang Wang, Yaomin Zhao, John Leggett, Richard D. Sandberg
Proc. ASME. GT2023, Volume 13D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V13DT36A011, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102213
https://doi.org/10.1115/GT2023-102213
View Paper titled, Direct Numerical Simulation of an HPT Stage: Unsteady Boundary Layer Transition and the Resulting Flow Structures
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Topics: Boundary layers, Computer simulation, Flow (Dynamics), Wakes, Turbulence, Blades, Boundary layer turbulence, Bubbles, Databases, Free stream turbulence
Proceedings Papers

The Modelling of Roughness Effect on the Performance of a Controlled Diffusion Airfoil

Grégory Delvaux, Riccardo Toracchio, Elissavet Boufidi, Emma Croner, Fabrizio Fontaneto
Proc. ASME. GT2022, Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V10AT29A005, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-79522
https://doi.org/10.1115/GT2022-79522
View Paper titled, The Modelling of Roughness Effect on the Performance of a Controlled Diffusion Airfoil
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Topics: Airfoils, Diffusion (Physics), Modeling, Surface roughness, Boundary layer turbulence, Blades, Finishes, Flow (Dynamics), Mach number, Manufacturing
Proceedings Papers

Profile Loss Reduction of High Lift Turbine Blades With Rough and Ribbed Surfaces

S. M. Ananth, Massimiliano Nardini, Aditya Vaid, Richard D. Sandberg, Nagabhushana Rao Vadlamani
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A026, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82558
https://doi.org/10.1115/GT2022-82558
View Paper titled, Profile Loss Reduction of High Lift Turbine Blades With Rough and Ribbed Surfaces
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Topics: Surface roughness, Turbine blades, Blades, Turbulence, Boundary layers, Pressure gradient, Separation (Technology), Suction, Boundary layer turbulence, Bubbles
Proceedings Papers

A Framework for Estimating Effects of Combustor Turbulence on Turbine Profile Loss Generation

Kanika Gakhar, Masha Folk, Edward M. Greitzer, Choon S. Tan
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A006, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-80607
https://doi.org/10.1115/GT2022-80607
View Paper titled, A Framework for Estimating Effects of Combustor Turbulence on Turbine Profile Loss Generation
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Topics: Combustion chambers, Turbines, Turbulence, High pressure (Physics), Energy dissipation, Aircraft engines, Boundary layer turbulence, Boundary layers, Gas turbines, Gates (Closures)
Proceedings Papers

Design Sensitivity of a 1-1/2 Stage Unshrouded High Work Turbine Using Very-Large Eddy Simulations

Ignacio Gonzalez-Martino
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A034, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-84281
https://doi.org/10.1115/GT2022-84281
View Paper titled, Design Sensitivity of a 1-1/2 Stage Unshrouded High Work Turbine Using Very-Large Eddy Simulations
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Topics: Design, Eddies (Fluid dynamics), Simulation, Turbines, Blades, Pressure, Rotors, Boundary layer turbulence, Computer simulation, Flow (Dynamics)
Proceedings Papers

Transition Model Extension for Roughness Effects

Dragan Kožulović, Nemo Juchmann, Alexander Führing, Christoph Bode
Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT32A042, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83277
https://doi.org/10.1115/GT2022-83277
View Paper titled, Transition Model Extension for Roughness Effects
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Topics: Surface roughness, Turbulence, Airfoils, Boundary layer turbulence, Boundary layers, Boundary-value problems, Computational fluid dynamics, Computer software, Energy dissipation, Flow (Dynamics)
Proceedings Papers

Accurate Prediction of Confined Turbulent Boundary Layer Flashback Through a Critically Strained Flame Model

Alex G. Novoselov, Dominik Ebi, Nicolas Noiray
Proc. ASME. GT2022, Volume 3B: Combustion, Fuels, and Emissions, V03BT04A023, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82506
https://doi.org/10.1115/GT2022-82506
View Paper titled, Accurate Prediction of Confined Turbulent Boundary Layer Flashback Through a Critically Strained Flame Model
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Topics: Boundary layer turbulence, Flames, Hydrogen, Swirling flow, Boundary layers, Gas turbines, Carbon, Combustion, Design, Dynamics (Mechanics)
Proceedings Papers

A Rapid Viscous-Inviscid Interaction Method for the Preliminary Design of S-Shaped Transition Ducts

A. Veyrat, J. F. Carrotte, A. D. Walker, C. Hall, H. Simpson
Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT34A026, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59515
https://doi.org/10.1115/GT2021-59515
View Paper titled, A Rapid Viscous-Inviscid Interaction Method for the Preliminary Design of S-Shaped Transition Ducts
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Topics: Composite materials, Design, Ducts, Flow (Dynamics), Separation (Technology), Splines, Computational fluid dynamics, Shear stress, Boundary layer turbulence, Compressors
Proceedings Papers

The Influence of Element Thermal Conductivity, Shape, and Density on Heat Transfer in a Rough Wall Turbulent Boundary Layer With Strong Pressure Gradients

Christoph Gramespacher, Holger Albiez, Mattias Stripf, Hans-Jörg Bauer
Proc. ASME. GT2020, Volume 7C: Heat Transfer, V07CT13A025, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15933
https://doi.org/10.1115/GT2020-15933
View Paper titled, The Influence of Element Thermal Conductivity, Shape, and Density on Heat Transfer in a Rough Wall Turbulent Boundary Layer With Strong Pressure Gradients
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Topics: Boundary layer turbulence, Density, Heat transfer, Pressure gradient, Shapes, Surface roughness, Thermal conductivity, Pressure, Additive manufacturing, Boundary layers
Proceedings Papers

Towards Quantitative Wall Shear Stress Measurements: Calibration of Liquid Crystals

Stefanos Melekidis, Maximilian Elfner, Hans-Jörg Bauer
Proc. ASME. GT2020, Volume 5: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage, V005T05A005, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14381
https://doi.org/10.1115/GT2020-14381
View Paper titled, Towards Quantitative Wall Shear Stress Measurements: Calibration of Liquid Crystals
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Topics: Calibration, Liquid crystals, Shear stress, Flow (Dynamics), Probes, Boundary layer turbulence, Boundary-value problems, Drag reduction, Flat plates, Flow control
Proceedings Papers

High-Fidelity Simulations of a High-Pressure Turbine Vane Subject to Large Disturbances: Effect of Exit Mach Number on Losses

Yaomin Zhao, Richard D. Sandberg
Proc. ASME. GT2020, Volume 2B: Turbomachinery, V02BT33A007, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14445
https://doi.org/10.1115/GT2020-14445
View Paper titled, High-Fidelity Simulations of a High-Pressure Turbine Vane Subject to Large Disturbances: Effect of Exit Mach Number on Losses
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Topics: Engineering simulation, High pressure (Physics), Mach number, Simulation, Turbines, Blades, Turbulence, Boundary layers, Flow (Dynamics), Shock (Mechanics)
Proceedings Papers

Adaptive Detached Eddy Simulation of End-Wall Flow in a Linear Compressor Cascade

Zifei Yin
Proc. ASME. GT2020, Volume 2C: Turbomachinery, V02CT35A010, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14526
https://doi.org/10.1115/GT2020-14526
View Paper titled, Adaptive Detached Eddy Simulation of End-Wall Flow in a Linear Compressor Cascade
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Topics: Cascades (Fluid dynamics), Compressors, Eddies (Fluid dynamics), Flow (Dynamics), Simulation, Viscosity, Pressure, Blades, Boundary layer turbulence, Corners (Structural elements)
Proceedings Papers

On the Importance of Transition Control at Transonic Compressor Blades

A. Hergt, J. Klinner, S. Grund, C. Willert, W. Steinert, M. Beversdorff
Proc. ASME. GT2019, Volume 2A: Turbomachinery, V02AT39A009, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90440
https://doi.org/10.1115/GT2019-90440
View Paper titled, On the Importance of Transition Control at Transonic Compressor Blades
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Topics: Blades, Compressors, Shock waves, Cascades (Fluid dynamics), Flow (Dynamics), Oscillations, Boundary layers, Shock (Mechanics), Air jets, Boundary layer turbulence
Proceedings Papers

The Impact of Combustor Turbulence on Turbine Loss Mechanisms

Masha Folk, Robert J. Miller, John D. Coull
Proc. ASME. GT2019, Volume 2B: Turbomachinery, V02BT40A002, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90307
https://doi.org/10.1115/GT2019-90307
View Paper titled, The Impact of Combustor Turbulence on Turbine Loss Mechanisms
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Topics: Combustion chambers, Turbines, Turbulence, Blades, Cascades (Fluid dynamics), Anisotropy, Boundary layer turbulence, Boundary layers, Chords (Trusses), Cross-flow
Proceedings Papers

Large Eddy Simulations of a Low-Pressure Turbine: Roughness Modeling and the Effects on Boundary Layer Transition and Losses

F. Hammer, Neil D. Sandham, Richard D. Sandberg
Proc. ASME. GT2018, Volume 2B: Turbomachinery, V02BT41A014, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75796
https://doi.org/10.1115/GT2018-75796
View Paper titled, Large Eddy Simulations of a Low-Pressure Turbine: Roughness Modeling and the Effects on Boundary Layer Transition and Losses
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Topics: Boundary layers, Large eddy simulation, Modeling, Pressure, Surface roughness, Turbines, Boundary layer turbulence, Flow (Dynamics), Blades, Cascades (Fluid dynamics)
Proceedings Papers

Direct Experimental Measurements of Heat Transfer Coefficient Augmentation due to Approach Flow Effects

Joshua B. Anderson, David G. Bogard, Thomas E. Dyson, Zachary Webster
Proc. ASME. GT2018, Volume 5C: Heat Transfer, V05CT19A036, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-77170
https://doi.org/10.1115/GT2018-77170
View Paper titled, Direct Experimental Measurements of Heat Transfer Coefficient Augmentation due to Approach Flow Effects
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Topics: Flow (Dynamics), Heat transfer coefficients, Film cooling, Boundary layers, Heat flux, Boundary layer turbulence, Coolants, Density, Design, Engines
Proceedings Papers

Large-Eddy Simulation of Corner Separation in a Compressor Cascade

Byung-Young Min, Jongwook Joo, Jomar Mendoza, Jin Lee, Guoping Xia, Gorazd Medic
Proc. ASME. GT2018, Volume 2C: Turbomachinery, V02CT42A052, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-77144
https://doi.org/10.1115/GT2018-77144
View Paper titled, Large-Eddy Simulation of Corner Separation in a Compressor Cascade
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Topics: Cascades (Fluid dynamics), Compressors, Corners (Structural elements), Large eddy simulation, Separation (Technology), Engineering simulation, Simulation, Boundary layers, Computation, Fluctuations (Physics)
Proceedings Papers

Scale-Resolving Simulations of Bypass Transition in a High-Pressure Turbine Cascade Using a Spectral-Element Discontinuous-Galerkin Method

Anirban Garai, Laslo T. Diosady, Scott M. Murman, Nateri K. Madavan
Proc. ASME. GT2017, Volume 2B: Turbomachinery, V02BT41A047, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64697
https://doi.org/10.1115/GT2017-64697
View Paper titled, Scale-Resolving Simulations of Bypass Transition in a High-Pressure Turbine Cascade Using a Spectral-Element Discontinuous-Galerkin Method
Open the PDF for Scale-Resolving Simulations of Bypass Transition in a High-Pressure Turbine Cascade Using a Spectral-Element Discontinuous-Galerkin Method in another window
Topics: Cascades (Fluid dynamics), Engineering simulation, High pressure (Physics), Simulation, Turbines, Inflow, Turbulence, Heat transfer, Suction, Airfoils
Proceedings Papers

Effect of Cooling on the Aerodynamic Performance in the Intercooled Compressor Vanes

Long-gang Liu, Xue-song Li, Xiao-dong Ren, Chun-wei Gu
Proc. ASME. GT2017, Volume 5B: Heat Transfer, V05BT22A008, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63875
https://doi.org/10.1115/GT2017-63875
View Paper titled, Effect of Cooling on the Aerodynamic Performance in the Intercooled Compressor Vanes
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Topics: Compressors, Cooling, Separation (Technology), Stators, Boundary layers, Computer simulation, Design, Pressure, Temperature, Turbulence